MH 016 Simple Epithelia

MICROSCOPE SLIDE

SLIDE NAME

MH 016 Simple Epithelia

TISSUES

Trachea
Intestine
Ovary
Kidney

STAIN

Hematoxylin & Eosin

IMAGE SIZE

147,440 x 32,102 pixels
17.6 GB

FILE SIZE

303 MB

MAGNIFICATION

40x

PIXEL SIZE

0.3171 µm

SOURCE

Medical Histology Collection

Example tissues that contain simple squamous epithelia.

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Questions or comments should be sent to
tcbrelje@gmail.com

This web site is owned and operated by:

T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Version 4.2

© 2005-2019.
T. Clark Brelje and Robert L. Sorenson.
All rights reserved.

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MH 016 Simple Epithelia

Pseudostratified Columnar Epithelium

The trachea is a tube that connects the larynx to the lungs allowing the passage of air. It is lined with a pseudostratified columnar epithelium.

As its name implies, this epithelium appears to be stratified (i.e., has multiple layers of cells) but in fact all of the cells are attached to the basement membrane. Therefore, it is a simple epithelium. The stratified appearance is due to the nuclei of individual cells being present at different levels.

Features of this pseudostratified epithelium:

Cilia - extend 5 to 7 µm from the surface of the epithelial cells. The dark line at their base is from their basal bodies.
Goblet Cells - scattered cells that secrete mucus. They are difficult to identify in this specimen, but a thick layer of mucus covers some regions of the epithelium.
Basement Membrane - the epithelium is separated from the underlying connective tissue by a thick basement membrane. It is seen as an acidophilic band beneath the epithelium.

This pseudostratified ciliated, columnar epithelium with goblet cells is known as respiratory epithelium.